<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1494175066843_6205">Hi All,</div><div id="yui_3_16_0_ym19_1_1494175066843_6205" dir="ltr">I have purchased a few new medical O2 bottles for Elementary 3000. I got a bit worried after the O2 piping and penetrating discussion. I will have internal O2 supply and I admit I had some reservations because the big guys don't do that. Then! this morning I was watching a show on TV about a Saudi Prince flying around in his beautiful two seater glider. Low and behold, there it was, behind the pilot, a O2 bottle. If airplanes can carry O2 tanks inside the plane, why not a submarine? </div><div id="yui_3_16_0_ym19_1_1494175066843_6205" dir="ltr">Hank</div></div></body></html>